No ANY records found for 143.186.12.
Try 186.12 instead?
id 5759, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 143.186.12. IN ANY ;ANSWER ;AUTHORITY . 86398 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025042800 1800 900 604800 86400 ;ADDITIONAL
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